Organización interna de unidades de alta presión en dominios tectónicos profundos (Complejo de Cabo Ortegal, NO España)

• Autores: Pablo Puelles Olarte, Benito Ábalos Villaro, José Ignacio Gil Ibarguchi
• Localización: Geogaceta, ISSN 0213-683X, Nº. 34, 2003, págs. 3-6
• Idioma: español
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• Resumen

  • High-pressure volcanic-arc granulites, N-MORB eclogites and shallow crystal voleanosedimentary highpressure gneiss units occur in the high-pressure metamorphie fold-nappes and duetile thrusts that make up the Cabo Ortegal upper allochthons. Confluence of units from such disparate tectonic settings occurred at an eo-Hereynian convergent plate margin, that in this case, involved oceanie, arc and continental lithosphere. We argue that the sheath-like form of the fold nappes and the mineral and stretehing lineations defined by high-pressure mineral assemblages subparallel to fold axes depict the internal organization of high-pressure sheets at deep teetonie realms of an oblique subduction/collision orogenie channel.